Comparison of the final images for the disk around HD 34282 using 18 principal components for the full dataset, frame selection, and random selection of frames. Left panel: Final images using the entire dataset, but implementing three different centers: the AGPM position only, both the AGPM and the star positions, and only the star position. Middle panel: Same as the previous panel, but with frame selection, using ~ 50% of the data. Right panel: Same as the middle panel but with a random selection of frames (see text for details). Red arrows indicate the most noticeable lingering shadows and speckles, as well as the most notable disk features. The yellow contours correspond to the continuous image of the observations made with ALMA (van der Plas et al. 2017), and correspond to 10 and 20 mJy levels.